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| Number | Title | Issue Date |
| 8048317 | Generation of free radicals, analytical methods, bacterial disinfections, and oxidative destruction of organic chemicals using zero valent iron and other metals Disclosed are methods for chemical analysis, bacterial disinfection, oxidative destruction and/or mineralization of organic compounds comprising using zero-valent iron and/or zero-valent iron-containing bimetallic compounds, preferably in acidic solution and/or in t... | 11/01/2011 |
| 7507345 | Soy proteins and/or soy derivatives with zero-valent iron compositions and use for environmental remediation Preparation of dispersions of zero-valance nanoscale iron particles and one of soy protein, soy milk, or other soy derivative. The dispersions can be used to treat contaminated soil or water. ... | 03/24/2009 |
| 7431849 | Encapsulated reactant and process An encapsulated reactant(s) having at least one encapsulant and at least one reactant. An outermost encapsulant is substantially nonreacting, impermeable and nondissolving with water. The reactant(s) contribute to at least one reaction with contaminants in environme... | 10/07/2008 |
| 7419606 | Selenium removal process A process for removing selenium from an aqueous stream using a supported sulfur material, and optionally the addition of an activating agent for enhanced removal of selenite, is disclosed. ... | 09/02/2008 |
| 7413664 | Selenium removal process A process for removing selenium from an aqueous stream using a supported sulfur material, to convert selenocyanate to selenite, followed by removal of the selenite from the aqueous stream. ... | 08/19/2008 |
| 7399414 | Wet oxidation with the aid of a porous catalytic contactor A process for oxidation of oxidizable materials which are dissolved or suspended in a liquid phase. A contactor in the form of a porous membrane is used. The contactor is designed such that an oxidizing phase flows along one surface thereof while the phase to be oxi... | 07/15/2008 |
| 7332076 | Water disinfection system using simultaneous multiple disinfectants A water disinfection system using simultaneous multiple disinfectants includes a completely stirred tank reactor (CSTR) and a contact basin or clearwell acting as a plug flow reactor (PFR). The CSTR receives ammoniated water and free chlorine, and generates multiple... | 02/19/2008 |
| 7329359 | Application of catalysts for destruction of organic compounds in liquid media A method of destroying an organic compound in liquid media comprising: contacting said liquid media with a catalyst of formula: nN/Ce1−xZrcBbB′b′B″b″O2−δ wherein n is a percentage from 0 ... | 02/12/2008 |
| 7326330 | Method and apparatus for scale and biofilm control Method and apparatus for electrolytically controlling the formation of scale and biofilm in water purification and other systems. An anode is deposited on or disposed on or adjacent to a surface, such as that of a quartz UV tube, providing a low pH environment which... | 02/05/2008 |
| 7300593 | Process for purifying a lipophilic fluid A process for purifying dry cleaning solvents from a mixture containing used dry cleaning solvents and contaminants, such as laundry soils, fabric treating agents. ... | 11/27/2007 |
| 7300594 | Process for purifying a lipophilic fluid by modifying the contaminants A process for purifying a lipophilic fluid employing a functionalized fabric treating agent. The functionalized fabric treating agent is capable of delivering fabric treating benefits in a non-aqueous fabric article treatment process and is designed for easy removal... | 11/27/2007 |
| 7291270 | Process for removal of impurities from an oxidizer purge stream A process is disclosed that relates to the removal of impurities and the recovery of a mother liquor and wash filtrate from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves the rem... | 11/06/2007 |
| 7273559 | Process for removal of impurities from an oxidizer purge stream A process is disclosed that relates to the removal of impurities and the recovery of a mother liquor and wash filtrate from an oxidizer purge stream produced in the synthesis of carboxylic acid, typically terephthalic. More particularly, the process involves the rem... | 09/25/2007 |
| 7273556 | Method for treating water containing manganese The invention concerns a method for treating water for human consumption, so as to eliminate manganese and possibly other metals comprising steps which consist in: causing said water to pass at least over a bed of filtering material (3) consisting at least pa... | 09/25/2007 |
| 7264726 | Nanocrystal-containing filtration media The invention relates to filtration media having nanocrystals of metal oxides, encapsulated in or impregnated into a binder matrix, which binds together particles of activated carbon. The filtration media can be compressed into a filtration block, has low pressure d... | 09/04/2007 |
| 7264747 | Coated microbubbles for treating an aquifer or soil formations A microporous diffuser includes a first elongated member including at least one sidewall having a plurality of microscopic openings. The sidewall defines an interior hollow portion of the member. The diffuser has a second elongated member having a second sidewall ha... | 09/04/2007 |
| 7261822 | Method and apparatus for activating water A process of activating water by leading water to pass through energy concentrated fields which are generated in particles, being composed of a single elementary material selected from a group of silicon, titanium, nickel and samarium or composed of fluorocarbon, of... | 08/28/2007 |
| 7247240 | Method for treating waste water The invention provides a method for treating waste water wherein organic and inorganic substances in waste water can be treated at high levels regardless of the concentration, and a unit itself can be made compact. The method of the invention is a method for treatin... | 07/24/2007 |
| 7238290 | Catalytic oxidation of peroxy salts Transition metal ions have the ability to increase the oxidation performance of the inorganic peroxy salts at room temperature by possibly lowering their activation energy or by producing more reactive free radicals. When two transition metal salts are used together... | 07/03/2007 |
| 7208437 | Catalyst and method for its manufacture A catalyst is synthesized by a method in which a catalytic metal such as platinum or another noble metal is dispersed onto a support member. A transition metal macrocycle is also adsorbed onto the support, and the support is heat treated so as to at least partially ... | 04/24/2007 |
| 7157013 | Filtration method A method of filtering contaminants from a chemical process stream is disclosed. The method includes a step of passing the process stream over a filtration medium including a plurality of discrete filtration elements, each element having parallel first and second fac... | 01/02/2007 |
| 7153987 | Process for making silver based epoxidation catalysts and process for preparing an olefin oxide The invention relates to a process for preparing a catalyst which involves (a) preparing a paste having a uniform mixture of at least one alkaline earth metal carbonate; a liquid medium; a silver bonding additive; and, at least one extrusion aid and/or optionally a ... | 12/26/2006 |
| 7147783 | Method for reducing hydrogen sulfide emissions from wastewater A cost-effective method for reducing the dissolved sulfide content in a wastewater stream and thereby hydrogen sulfide emissions therefrom involving the steps of adding a transition metal salt to the wastewater stream at the upper reaches of a wastewater collection ... | 12/12/2006 |
| 7135116 | Process for recovery of nutrients from wastewater The present invention relates to a process for treating a wastewater comprising an ammonium ion species and a phosphorus ion species. The process comprises the steps of: (i) treating the effluent in a first stage of the process to convert the phosphorus to a phospho... | 11/14/2006 |
| 7067693 | Deeply reduced oxidation catalyst and its use in preparing N-(phosphonomethyl) glycine compounds This invention relates to an improved catalyst, comprising a carbon support having a noble metal at its surface, for use in catalyzing liquid phase oxidation reactions, especially in an acidic oxidative environment and in the presence of solvents, reactants, interme... | 06/27/2006 |
| 7022241 | Gas-gas-water treatment system for groundwater and soil remediation A sparging system for in-situ groundwater remediation for removal of contamination including dissolved chlorinated hydrocarbons and dissolved hydrocarbon petroleum products including the use in injection wells of microfine bubble generators, matched to substrates of... | 04/04/2006 |
| 7013837 | Method for building environment-affinitive pigpen and pigpen structure A pig pen structure has a walking passage and a plurality of pig houses for housing an animal installed along the walking passage. Each pig house has an evacuation room, a lodging room having front, back, and two side walls, and an evacuation room gate installed bet... | 03/21/2006 |
| 6992042 | Doped titanium oxides Pyrogenically prepared titanium dioxide doped by means of an aerosol contains an oxide from the group zinc oxide, platinum oxide, magnesium oxide and/or aluminium oxide as the doping component. It is prepared as follows: in the pyrogenic preparation of titanium diox... | 01/31/2006 |
| 6991735 | Free radical generator and method An apparatus for generating free radical species can be used to sanitize water systems. The apparatus generates hydroxyl free radical species using substantially pure water, or using a liquid that is substantially free of oxygen-reactive species, to maximize free ra... | 01/31/2006 |
| 6984329 | Coated microbubbles for treating an aquifer or soil formations A microporous diffuser includes a first elongated member including at least one sidewall having a plurality of microscopic openings. The sidewall defines an interior hollow portion of the member. The diffuser has a second elongated member having a second sidewall ha... | 01/10/2006 |
| 6977049 | Treatment process for industrial waste stream A process for treating an industrial waste stream containing a borane compound including contacting the industrial waste stream with a resin carrying an oxidation catalyst that is capable of oxidizing the borane compound to boric acid. ... | 12/20/2005 |
| 6962629 | Method for moving contaminants from gases Carbon dioxide is purified through the use of catalytic oxidation. Carbon dioxide is exposed to at least one catalyst, oxidizing at least a portion of the nonvolatile organic residues to form purified carbon dioxide that is directed to an application. Carbon dioxide... | 11/08/2005 |
| 6916428 | Photo-chemical remediation of Cu-CMP waste A photo-chemical remediation of Cu-CMP waste streams basically includes the following acts: adding photo-catalyst particles into waste streams containing copper ions and organic pollutants and exposing the waste streams to UV light or sunlight to make copper ions be... | 07/12/2005 |
| 6908559 | Process for treating a solid-liquid mixture A process for treating a solid-liquid mixture by cavitation to decompose at least some contaminant associated with the solid particles, the contaminant either being absorbed into the pores of the solid or onto the surface of the solid particles. The process includes... | 06/21/2005 |
| 6905607 | Method for utilizing rainwater collected at buildings A system for making use of rainwater falling on houses and buildings, which comprises a means for removing a predetermined quantity of initial precipitation from the rainwater collected form the roof surface of the building; and a purifier receiving the subsequent r... | 06/14/2005 |
| 6902679 | Treatment of water containing organic wastes with aromatic amine nitrate salts A process for wet oxidation of a waste stream containing organic carbon and organic or inorganic nitrogen-containing pollutants which comprises initially removing organic or inorganic nitrogen-containing pollutants using a nitrate salt of an aliphatic or aromatic am... | 06/07/2005 |
| 6866788 | Method and device for purifying aqueous effluents by catalytic oxidation The invention concerns a method for purifying aqueous effluents, in particular polluted water, by catalytic oxidation using a three-phase reactor comprising two communicating chambers. The invention is characterised in that it consists in: maintaining the catalyst s... | 03/15/2005 |
| 6866781 | Direct oxygen injection groundwater remediation method and system A bioremediation method and system for destroying or reducing the level of contaminants in a contaminated subterranean body of water includes a plurality of spaced injection sites. The injection sites extend below ground and intersect a body of groundwater. Each of ... | 03/15/2005 |
| 6846468 | Method for decomposing bromic acid by photocatalyst and apparatus therefor The invention relates to a method for decomposing bromate ions contained in a liquid. The method includes the sequential steps of bringing the liquid into contact with a photocatalyst; and irradiating the photocatalyst with a light ray having an energy that is not l... | 01/25/2005 |
| 6830698 | Free radical generator and method An apparatus for generating free radical species can be used to sanitize water systems. The apparatus generates hydroxyl free radical species using substantially pure water, or using a liquid that is substantially free of oxygen-reactive species, to maximize free ra... | 12/14/2004 |
